注：该脚本在keepalived配置文件中调用

#!/bin/bash
#如果nginx挂掉，重启nginx如果起不来nginx，停止keepalived，保证高可用ip漂移给备用keepalived

nginx=`netstat -tanulp|grep :80|wc -l`

if [ $nginx -eq 0 ];then
    systemctl restart nginx
    nginx=`netstat -tanulp|grep 80|wc -l`
	if [ $nginx -eq 0 ];then
        	systemctl stop keepalived
    	fi
fi